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Less ram visible after tighten timings?

post #1 of 5
Thread Starter 
I bought 2 of these... to replace my old 1GB Dimms.

I started playing around with the timings; going from 9-9-9-24 to 8-8-8-24 the amount of usable memory drops from 16GB to 12GB.

I'm going to let memtest run tonight on the slower timings to see if anything comes up.

I was wondering if anyone has ever experienced anything similar.

Thanks
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WangBox
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post #2 of 5
Thread Starter 
One pass of memtest did not turn up any errors. My guess is some incompatibility between my ram and mobo.
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WangBox
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post #3 of 5
Can you try each stick on its own at 8-8-8-24?
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post #4 of 5
Just another way instability presents itself. Not much point in testing each stick individually as it's almost certain they will all work.

You likely need the looser (sub)timings or increased QPI/VTT voltage for the extra memory to work.

What system is this on, your signature system?
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post #5 of 5
Thread Starter 
Yes. At 9-9-9-24 and 1.5v everything seems fine. Passed runs of memtest and max intelburn.

Your theory seems most plausible. It's stable at the above timings, and I'm happy with that.

Thanks for your help smile.gif
WangBox
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KeyboardPowerCaseMouse
Poker (Cherry MX Brown) Corsair HX620 Corsair 550D Corsair Vengeance M65 
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WangBox
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CPUMotherboardGraphicsRAM
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Hard DriveCoolingOSMonitor
Vertex 4 256GB/Corsair F120 SSD/1TB WD BLue Corsair H100 Windows 8 Pro 64bit AOC Q2963PM 
KeyboardPowerCaseMouse
Poker (Cherry MX Brown) Corsair HX620 Corsair 550D Corsair Vengeance M65 
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Shiden Kai Astro A40 Audioengine A2's /w D1 DAC 
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